features of the humidity sentor

      Humidity sensor with semi-conductor technology has requirement to the envirnment temperature. It would get damaged if using temperature exceed the fixed value. So the electronic humidity sensor is more suitable for measuring moisture in the occasions of clean and normal temperature.

      Compared with the traditional humidity sensor, electronic humdity sensor is developing quickly in recent decades, especially the recent 20 years. Humidity sensor products must be set by a standard humidity generator one by one before delivery. Electronic humidity sensor’s accuracy can reach 2% to 3% RH, much precise than other products.

      However, in real practice, its accuracy will decline because of the impact of dust, oil pollution and harmful gas. The humidity sensor’s general devition is about ± 2% or even higher. Generally, manufacturers would indicate a calibration time of the effective use for 1 or 2 years, which should be reset after expiration.

      Accuracy of the electronic humidity sensor should be judged according to its long-term stability. Generally speaking, electronic humidity sensor's long-term stability and useful life are not longer than psychrometer humidity sensor.